import CryptoJS from 'crypto-js'
import sha1 from 'sha1'
import {sm2} from 'sm-crypto'
function Base64() {
  // private property
  var _keyStr =
    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
  // public method for encoding
  this.encode = function (input) {
    var output = "";
    var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
    var i = 0;
    input = this._utf8_encode(input);
    while (i < input.length) {
      chr1 = input.charCodeAt(i++);
      chr2 = input.charCodeAt(i++);
      chr3 = input.charCodeAt(i++);
      enc1 = chr1 >> 2;
      enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
      enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
      enc4 = chr3 & 63;
      if (isNaN(chr2)) {
        enc3 = enc4 = 64;
      } else if (isNaN(chr3)) {
        enc4 = 64;
      }
      output =
        output +
        _keyStr.charAt(enc1) +
        _keyStr.charAt(enc2) +
        _keyStr.charAt(enc3) +
        _keyStr.charAt(enc4);
    }
    return output;
  };
  // public method for decoding
  this.decode = function (input) {
    var output = "";
    var chr1, chr2, chr3;
    var enc1, enc2, enc3, enc4;
    var i = 0;
    input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
    while (i < input.length) {
      enc1 = _keyStr.indexOf(input.charAt(i++));
      enc2 = _keyStr.indexOf(input.charAt(i++));
      enc3 = _keyStr.indexOf(input.charAt(i++));
      enc4 = _keyStr.indexOf(input.charAt(i++));
      chr1 = (enc1 << 2) | (enc2 >> 4);
      chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
      chr3 = ((enc3 & 3) << 6) | enc4;
      output = output + String.fromCharCode(chr1);
      if (enc3 != 64) {
        output = output + String.fromCharCode(chr2);
      }
      if (enc4 != 64) {
        output = output + String.fromCharCode(chr3);
      }
    }
    output = this._utf8_decode(output);
    return output;
  };
  // private method for UTF-8 encoding
  this._utf8_encode = function (string) {
    string = string.replace(/\r\n/g, "\n");
    var utftext = "";
    for (var n = 0; n < string.length; n++) {
      var c = string.charCodeAt(n);
      if (c < 128) {
        utftext += String.fromCharCode(c);
      } else if (c > 127 && c < 2048) {
        utftext += String.fromCharCode((c >> 6) | 192);
        utftext += String.fromCharCode((c & 63) | 128);
      } else {
        utftext += String.fromCharCode((c >> 12) | 224);
        utftext += String.fromCharCode(((c >> 6) & 63) | 128);
        utftext += String.fromCharCode((c & 63) | 128);
      }
    }
    return utftext;
  };
  // private method for UTF-8 decoding
  this._utf8_decode = function (utftext) {
    var string = "";
    var i = 0;
    var c = 0;
    var c1 = 0;
    var c2 = 0;
    while (i < utftext.length) {
      c = utftext.charCodeAt(i);
      if (c < 128) {
        string += String.fromCharCode(c);
        i++;
      } else if (c > 191 && c < 224) {
        c2 = utftext.charCodeAt(i + 1);
        string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
        i += 2;
      } else {
        c2 = utftext.charCodeAt(i + 1);
        var c3 = utftext.charCodeAt(i + 2);
        string += String.fromCharCode(
          ((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)
        );
        i += 3;
      }
    }
    return string;
  };
}
window.lin = (word, keyStr) => {
    // console.log('AESDecrypt')
    keyStr = keyStr || '4pQME1iaig+BZylP'
    var key = CryptoJS.enc.Utf8.parse(keyStr)
    var decrypt = CryptoJS.AES.decrypt(word, key, { mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7 })
    return CryptoJS.enc.Utf8.stringify(decrypt).toString()
  };
export default {
  Base64,
  // 加密 AES
  AESEncrypt(word, keyStr) {
    keyStr = keyStr || '4pQME1iaig+BZylP'
    var key = CryptoJS.enc.Utf8.parse(keyStr)
    var srcs = CryptoJS.enc.Utf8.parse(word)
    var encrypted = CryptoJS.AES.encrypt(srcs, key, { mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7 })
    return encrypted.toString()
  },
  // 解密 AES
  AESDecrypt(word, keyStr) {
    // console.log('AESDecrypt')
    keyStr = keyStr || '4pQME1iaig+BZylP'
    var key = CryptoJS.enc.Utf8.parse(keyStr)
    var decrypt = CryptoJS.AES.decrypt(word, key, { mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7 })
    return CryptoJS.enc.Utf8.stringify(decrypt).toString()
  },
  //加密 DES
  DESEncrypt(word, keyStr) {
    keyStr = keyStr ? keyStr : 'WZ@KY~01';
    var key = CryptoJS.enc.Utf8.parse(keyStr);
    // var srcs = CryptoJS.enc.Utf8.parse(word);
    var encrypted = CryptoJS.DES.encrypt(word, key, { mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7 });
    // return encrypted.toString();
    return encrypted.ciphertext.toString();
  },
  //解密 DES
  DESDecrypt(word, keyStr) {
    keyStr = keyStr ? keyStr : 'WZ@KY~01';
    var keyHex = CryptoJS.enc.Utf8.parse(keyStr);
    var decrypted = CryptoJS.DES.decrypt({
      ciphertext: CryptoJS.enc.Hex.parse(word)
    }, keyHex, {
      mode: CryptoJS.mode.ECB,
      padding: CryptoJS.pad.Pkcs7
    });
    var result_value = decrypted.toString(CryptoJS.enc.Utf8);
    return result_value;
  },
  //加密 SM2
  SM2Encrypt(word, keyStr) {
    return sm2.doEncrypt(word, keyStr, 0)
  },
  //解密 SM2
  SM2Decrypt(word, keyStr) {
    return sm2.doDecrypt(word, keyStr, 0)
  },
  //加密 sha1
  sha1Encrypt(word) {
    return sha1(word)
  },
}
